Pattern-reversing jacquard.



J. L. PATTERSON & L. A. GRISSOM.

PATTERN REVERSING JACQUARD. APPu'cmoN FILED DEC. 23, 1913.

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I L. PATTERSON 81 L A. GRISSOM.

PATTERN REVERSING JACQUARD. APPLICATION man 020.23. I913.

1,151 Patented Aug. 31, 1915.

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I W %M%a J. L. PATTERSON & L. A, GRISSOM.

PATTERN REVERSING JACQUARD.

APPLICATION FILED DEC. 23. 1913.

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usually attained bv reversing JOHN LEGERWOQD PATTERSON, 01F EOANOKERAPIDS, AND LOUIS ALPHEUS GRISSOM,

' OF ROSEMARY, NORTH CAROLINA.

Specification of Letters Patent.

Patented Aug. it, 19115..

Application filed December 23. 1913. Serial No. 808,488.

To all whom it may concern Be it known that we, J onn L. PATTERSON andLouis A. (hussoii, citizens of the United States, residing at RoanokeRapids and Rosemary, respectively, in the county of Halifax and State ofNorth Carolina, have invented certain new and useful Improvements inPattern-Reversing Jacquards, of which the following is a specification.

This invention pertains to jacquard mechanisms for looms, andparticularly to means for reversing the direction of travel of the cardspast the jacquard cylinder, a result the feed pawls or hooks of saidcylinder. This type of mechanism has heretofore been used to some extentin Weaving patterns which are symmetrical with reference to a line, andpossesses the advantage of reducing by one half the number of cardsnecessary to weave the complete pattern, as compared with weavin withoutreversing the travel of the cards.

iilsually, devices of this character employ two extra needles in thejacquard mechanism, each controlling a corresp'ondinlg upright oruprights connected with a reversing mechanism for the cylinder drive Inconnection with such reverse mechanism the card at each end of the chainor series of cards serving to produce one half of the pattern, has beenprovided with a perforation positioned to receive one or the other ofthe extra needles, and thereby through the ordinary action of thejacquard mechanism itself has served to effect a reversal of thedirection of feed of the jacquard cylinder as one or the other end ofthe card chain ap proached the limit otits travel. In the operation ofsuch devices, some difficulty has heretofore been experienced by reasonof the premature actuation of the reversing mechanism, due to accidentalneedle indicat on. The causes of such accidental needle indication havebeen various, and the result has been heavy loss, imperfectly wovenpat-terns being unsalable, or salable only at extremely iow .andunremuneratlve prices.

The purpose of the present invention is hence to provide means to holdback the two needles controlling the reverse mechanism. and maintainthem in a neutral or inoperative position away from the cards andcylinder of the jacquard mechanism, until the last card of the patternmoves onto said cylinder and is about ready to come into operativerelation with the needles. As the simplest and also one of the mosteti'ective means of accomplishing this purpose, weights are employed,which, through connection with the needles, normally hold them back orin inoperative position, but which are so connected with thepattern-cards as to be lifted to free said needles as the last operativecard of the series, moving in a given direction, reaches the jacquardcylinder. In

this way accidental or premature reversal 1S positwely prevented.

It will be understood that by the terms last card of the pattern 0r endcard of the effective pattern series, etc, We mean the last card whichis effective in Weaving the pattern, 2'. e., the card which is presentedat the moment of reversal and therefore marks have found it desirable toattach a series of dummy cards at each end of the chain of cards ahd thepreferred form of the devicei'llustrated in the accompanying drawings isillustrated as equipped with a pattern card series or? this character.

T he accompanying drawings illustrate an embodiment of the inventionapplied to a double-lift jacquard, but it is equally applicable to thesingle-lift type, without change of construction or mode of operation.When applied to a double-lift jacquard, it is necessary either to makeuse of two uprights, each controlled by a single reversing needle andeach connected to the reversing mechanism, or else to use a singleupright for each reversing needle, and so time the passage of the cardsthat the reversing card will iridicate the reversing needle at theproper time to bring the reversing upright into engagement with anupwardly moving grid-bar. The device using a single upright beingsimpler, is illustrated herein. but obviously the double uprightarrangement. characteristic of all double-lift jacquards, might besubstituted.

In these drawings: Figure l is a sectional ele ation of a. loom and itsjacquard mechanism, suliicient to illustrate the construction andoperation of the mechanism here ining downward or in the direction ofthe arrow Fig. l is an elevation of the jacquard cylinder and thereversing feed pawl thereof; Fig. 5 is a view similar to Fig. 2,,showingthe last card from the lower cradle just leaving indicating position onthe jacquard cylinder immediately after the reversal of the cylinderfeed-pawl or hook; Fig. 6 is a )ers )ective view showin the end of the:I D

Jacquard cylinder, and a portion of several of the pattern-cards and theneedles, illustrating their relation one to another; Fig.

Tis-a fragmentary elevation of the hold-out mechanism for the needles,showlng the upper needle released and in operative pos1 tion, and thelower needle retracted and held out of operative position, this beingthe posi- 1 tion of parts indicated also in Fig.5; and

Fig. 8 is a top plan view of the partsshown in Fig. 7. V i

In the drawings 1 represents the loom frame, 2 the crank-shaft of theloom, and 3v the bottom shaft or some other shaft running at half thespeed of the crankshaft.

4 is a gauntree supporting the Jacquard frame 5. (3 is a double crank,which through the connecting rods 7 and the rocklevers 8, drives thegriff frames 9 and 10, the

jacquard illustrated being of what is known as the single-cylinderdouble-lift type, although as above stated, the improvements mayobviously be applied to other types by minor changes which will readilysuggest themselves to those familiar with such machinery; Thecrank-shaft 2 is provided with a crank disk or wheel 11, which throughthe connecting-rod 12, bell-crank 13 and sliderod 14, moves the jacquardcylinder 15 bodily toward and from the needles. These needles being wellknown and forming no part of the invention, have been omitted with theexception of the two extra needles 16 and 17, which serve to control thereversal of travel of the cards. The end of the cylinder 15 is providedwith four lugs 18, which are successively engaged by one or the other ofthe hooks 19 and 20 rigidly mounted or formed on the yoke 21. This yoke21, which is pivoted at 22 to the jacquard frame, falls by gravity tobring hook 19, or may be rocked by means of the cord at nism which iscapable of giving the desiredstep-by-step motion for the-requisitelength of time, first in one andthen i'n'thc other direction.

The cord 23 extends downward, and is connected at 21 to the weighted armpivoted in a bracket 2.6 on the loom frame 1. The arm 25 is provided atone end with a latching-nose 27 of substantially the form shown, and attheopposite end is connected by a cord 28 to an upright 29 which iscontrolled by the upper needle 16, and which when said needle 16 isretracted, is held back clear of .the grifl' bars. Pivoted in thebracket 26 is a second latch arm 30 also havv ing a latching-nose, saidarm being normally drawn downward by a coil spring 31, but adapted to belifted against the action of said spring by a cord 32 connected toanupright 38 which is controlled by the lower needle 17, and which inthe retracted position of said needle is held clear of the griif frames.

The needles 16 and 17 are eachurged'forward or towardthe card-cylinderbysprings- 31, and if allowed to remain in their normal positions wouldbe, moved back by each card presented by the cylinder and not providedwith a corresponding hole, and would hence prevent lifting of theiruprights by their respective griif bars, if the cards were alwaysproperly positioned and the parts functioned properly. To avoidaccidental reversals, however, incidentto a nisplaced card or likecause, wefind it desirable to hold the needles 16 and-17 in inoperativeposition in opposition to the action of the springs 34, except when thelast cardsof the pattern serie'sor reversalrards are about to bepresented on the cylinder.- To effect this purpose we mount in suitablesupports, two bell-crank levers 35 and 36, having horizontally-extendingarms 37 and 38 at their upperends, and longer horizontally-extendingarms 39 and 40 at their lower ends, the arms 37 and 38 being connectedby short links 41 and 42 tothe needles 16 and 17 respectively. Each ofthe bell-crank levers 35 and 36 is provided with a .coil sprin L3tending to rotate it in a vdirection to release the needles tracted.

16 and 17, and cause them to move forward aided by the springs 34. Thearm 39is connected by a cord 44 to a weight 45, while the arm 40 isconnected by a cord 46 to a forated cards, laced. together at theiredges' as indicated at 49. At suitable intervals, say after everytwelfth card, a supporting rod 50 is introduced, the ends of whichproject beyond the cards and rest upon cradles 51 and 52, permitting theintermediate cards to hang down between the bars of the cradles inV-shaped loops, as seen in Figs. 1, 2 and The opposite ends of thischain of cards are connected by cards 53 and 5% to the weights s) and 47respectively, and the length of the cords 53 and 5, is such that justbefore the last effective card of the pattern series near either end ofthe chain of cards reaches indicatin position on the cylinder 15, thecorrespon ing weight 1:) or 47 will be lifted by the pull of the cords,thus releasing the bell-crank 35 or 36, and consequently allowing thecorresponding needle 16 or 17 to move forward into operative position. i

' Assuming, for example, that the last card to be indicated in thechainof cards from the upper cradle 51, has reached the position shown inFig.2, the needle 17 will remain in its extreme forward position, passingthrough the hole provided in the card to effect the desired reversal,and carrying the upright 33 into hooking engagement with a griff bar ofthe rising gritt frame. The lifting of the upright 33 raises thelatch-arm 30, whichreleases the latch-nose 27 and allows the weightedarm 25 to fall. The fall ing of said arm 25 shifts the yoke 21, thusreversing the direction of feed of the cylinder 15. The parts of themechanism will now retain their new-positions, with the exception of theneedle, 17, which owing to the reverse movement of the cards andconsequent lowering of weight 47,'is again re- As the last card to beindicated in the chain of cards on cradle approaches the indicatingposition on cylinder 15. the

' weight #15 is lifted, thus releasing the bellcrank 85 and its needle16. hen this card reaches the indicating position on the cylinder, asshown in Fig. 5, the needle 16 will pass through the perforationprovided for it in said card, carrying the upright 29 into engagementwith a grifl bar of the rising grid frame, said frame, by lifting theweighted arm 25. permitting the yoke 21 to fall by gravity and again'toshift or reverse the drive of the cylinder 15. -When the weighted arm isin its lifted position, the nose of latch-arm 30 engages over thelatching-nose 27, and retains the arm 25 in its elevated position. Thepattern cards are thus fed over the cylinder alternately in reverseorder, reversal being eflectually prevented until one or the other endof the pattern series has been reached.

In the claims the expression terminal card is used to designate the endcards of the pattern, or those intended to indicate the reversingneedles. \Vhile such cards are the end cards of the effective patternseries,

it is obvious that other inoperative cards may be connected beyond them,and serve as a convenient means for attaching the cords and 5%, asillustrated in the drawings. To guard against failure to reverse, morethan one card adapted to indicate the reversing needle may be attachedat each end of the pattern series, and the use of the expressionterminal card is not intended to exclude such construction.

Having thus described our invention, what we claim is 1. The combinationof a jacquard mechanism; a series of jacquard cards; means for feedingsaid cards in forward and reverse order to indicating position; areversing mechanism controlled by the jacquard mechanism through theindication'of the terminal cards of the series, and adapted to effect areversal of feed of the card series; means adapted normally to maintainsaid reversing mechanism in inoperative condition; and mechanism adaptedto be actuated by the approach of a terminal card to indicating positionto render said reversing mechanism operative.

2. The combination of a jacquard mechanism; a series of jacquard cards;means for feeding said cards in forward and reverse order to indicatingposition; two reversing mechanisms controlled by the jacquard mechanism,one to change from forward to reverse feed and the other from reverse toforward feed and each adapted to be operfeed of the card series andincluding a reversing needle adapted to be indicated by a terminal cardof the series; means adapted normally to maintain said reversing needle.

needle adapted to be indicated by a corresponding terminal card of theseries, one reversing mechanism being adapted to change from forward toreverse feed and the other from reverse to forward feed; means-adaptednormally to maintain both said reversing needles in an inoperativeposition; and mechanism adapted to be actuated by the approach of eachterminal card toward indicating position to cause the correspondingreversing needle to move into operative position.

5. The combination of a jacquard'mechanism; a series of jacquard cards;means for feeding said cards in forward and reverse order to indicatingposition; a reversing mechanism adapted to effect a reversal of feed ofthe card series-and including a reversing needle adapted to be indicatedby a terminal card of the series; a weight adapted normally to maintainsaid reversing needle in inoperative position and operative connectionsbetween said terminal card and said weight, adapted to lift said weightand release said reversing needle, as the terminal card approachesindicating position.

6. The combination of a jacquard mechanism; a series of jacquard cards;means for feeding said cards in forward and reverse order to indicatingposition; two reversing mechanisms, each including a reversing needleadapted to be indicated by a corresponding terminal card of the series,one reversing mechanism being adapted to change from forward to reversefeed and the other from reverse to forward feed; weights, one connectedwith each of said reversing needles and adapted to maintain the samenormally in inoperative position; and operative connections, one betweeneach of said terminal cards and a corresponding one of said Weights,adapted to lift said weights and release the corresponding needles assaid terminal cards approach indicating position. 7. The combinationwith a pattern reversing jacquard of the type in which reversal of thecard series is effected through the indication of a reversing needle bya reversing card included in the series; of means normally renderingsaid reversing needle inoperative; and a mechanism adapted to be actuated by the approach of a reversing card to indlcating position to rendersaid needle operative.

8. The combination with a pattern reversing jacquard of the type inwhich reversal of the card series is effected through the indication ofeither of two reversing needles by a corresponding one of two reversingcards included. in the series of means adapted normally to render bothsaid reversing needles inoperative; and a mechanism adapted to beactuated by the approach of either of said reversing cards to indicatingposition to render the corresponding reversing needle operative.

' 9. The combination with a pattern reversing jacquard having reversingneedles adapted to be actuated by reversing cards included in the cardseries; of supporting cradles for the card series; means normallymaintaining said reversing needles inoperative; and mechanism adapted tobe actuated by the exhaustion ofthe card series from either of saidcradles, to render a corresponding reversing needle operative.

10. The combination with a pattern-re'- versing jacquard mechanismprovided'with reversing needles adapted to be indicated by reversingcards included in the card series and when so indicated adaptedtofeilect a reversal of feed of the series; of a secondary mechanismadapted to be actuated by the I movement of said card series to prevent'reversal of such movement except atpredetermined limits of travel ofthe card series.

11. The combination of a jacquard mechanism having the usual needles; acard cylinder; a reversible ratchet feed for said cylinder; a latchmechanism operatively connected to said feed and adapted to effectreversals thereof; operative connectionbetween the latch mechanism andtwo needles of the jacquard; a series of pattern cards adapted to be fedby said cylinder and having terminal cards each adapted to indicate acorresponding one of the above mentioned two needles; weights eachadapted to hold a corresponding one of said two needles in inoperativeposition; and connections between each terminal card and a correspondingweight adapted to release the corresponding needle as either terminalcard approaches indicating position. i

12. The combination with a jacquard mechanism having means for feeding aseries of pattern cards in forward and reverse directions, and having acontrol device operatively associated with said feeding means forcontrolling the direction of feed of said series of cards, of a controlneedle mounted in said jacquard and operatively connected with saidcontrol device for actuating the latter; a series of pattern cards,

including a control card for indicating said names to this specificationin the presence of control needle; and secondary means adapttwosubscribing witnesses.

ed to be actuated by the movement of said JOHN LECERWOOD PATTERSONcontrol card to and from indicating position LQUIS ALTPHEEUS GRISQOM toprevent the actuation of said control de- I vice by said control needleexceptwhen said Witnesses: card 1s at indicating position. J. T.STAINBACK,

In testimony whereof we have signed our E. W. LEIIMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner-of Patents,

Washington, 33. 0.

